Long-Term Analysis of Hydropower’s Pivotal Role in Sustainable Future of Greece

Hydropower, a proven renewable electricity generation technology, has satisfied approximately 16% of the global annual electricity consumption up to the present day. In Greece, hydropower applications throughout the last thirty years have covered almost 6–10% of the mainland’s annual electricity dem...

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Main Author: John K. Kaldellis
Format: Article
Language:English
Published: MDPI AG 2025-04-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/18/9/2214
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author John K. Kaldellis
author_facet John K. Kaldellis
author_sort John K. Kaldellis
collection DOAJ
description Hydropower, a proven renewable electricity generation technology, has satisfied approximately 16% of the global annual electricity consumption up to the present day. In Greece, hydropower applications throughout the last thirty years have covered almost 6–10% of the mainland’s annual electricity demand. The present work examines the long-term performance and the current status of hydropower applications in Greece as well as their potential contribution to accomplishing the national energy targets set in compliance with the European Directives. A dedicated visualization of large hydropower (LHP) plants’ main characteristics is also performed. Moreover, a critical evaluation of the existing LHP plants’ energy yield-based time evolution is carried out, attempting to provide insights into any fundamental trends and similarities. The analysis reveals that the majority of Greek LHP plants are primarily used to meet the corresponding mainland’s peak load demand. To this end, acknowledging the power balancing service capacity of pumped hydro storage stations, the prospects and the challenges for the specific energy storage technology’s deployment are also emphasized.
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spelling doaj-art-7a88d679720249589abc14e70fbda0cb2025-08-20T03:52:57ZengMDPI AGEnergies1996-10732025-04-01189221410.3390/en18092214Long-Term Analysis of Hydropower’s Pivotal Role in Sustainable Future of GreeceJohn K. Kaldellis0Soft Energy Applications & Environmental Protection Laboratory, Mechanical Engineering Department, University of West Attica, 250 Thivon & P. Ralli Street, 12241 Athens, GreeceHydropower, a proven renewable electricity generation technology, has satisfied approximately 16% of the global annual electricity consumption up to the present day. In Greece, hydropower applications throughout the last thirty years have covered almost 6–10% of the mainland’s annual electricity demand. The present work examines the long-term performance and the current status of hydropower applications in Greece as well as their potential contribution to accomplishing the national energy targets set in compliance with the European Directives. A dedicated visualization of large hydropower (LHP) plants’ main characteristics is also performed. Moreover, a critical evaluation of the existing LHP plants’ energy yield-based time evolution is carried out, attempting to provide insights into any fundamental trends and similarities. The analysis reveals that the majority of Greek LHP plants are primarily used to meet the corresponding mainland’s peak load demand. To this end, acknowledging the power balancing service capacity of pumped hydro storage stations, the prospects and the challenges for the specific energy storage technology’s deployment are also emphasized.https://www.mdpi.com/1996-1073/18/9/2214large hydropower plantsenergy yieldcapacity factorpumped hydro storagepower balancing services
spellingShingle John K. Kaldellis
Long-Term Analysis of Hydropower’s Pivotal Role in Sustainable Future of Greece
Energies
large hydropower plants
energy yield
capacity factor
pumped hydro storage
power balancing services
title Long-Term Analysis of Hydropower’s Pivotal Role in Sustainable Future of Greece
title_full Long-Term Analysis of Hydropower’s Pivotal Role in Sustainable Future of Greece
title_fullStr Long-Term Analysis of Hydropower’s Pivotal Role in Sustainable Future of Greece
title_full_unstemmed Long-Term Analysis of Hydropower’s Pivotal Role in Sustainable Future of Greece
title_short Long-Term Analysis of Hydropower’s Pivotal Role in Sustainable Future of Greece
title_sort long term analysis of hydropower s pivotal role in sustainable future of greece
topic large hydropower plants
energy yield
capacity factor
pumped hydro storage
power balancing services
url https://www.mdpi.com/1996-1073/18/9/2214
work_keys_str_mv AT johnkkaldellis longtermanalysisofhydropowerspivotalroleinsustainablefutureofgreece